Hey welcome to the boards i'm glad to see another fellow New Englander in these boards...
Well just about any stereo(aftermarket)will fit you can pick up an installation kit thru www.jltroy.com they have interior colored kits as well and also wiring harnesses.....
And another thing you should know about the speakers if you're planning on upgrading the rears are 6 3/4's and the fronts I believe are 6 1/2's but require a spacer for them to fit properly,,,,but search the audio section good you'll find alot of usefull tips and what not.....
Black 2k SE Performance/package
17x7 Konig-Caffeine's ,Stillen front spoiler,Aluminum dash kit,Remote starter,35% Tint,Aluminum Pedal Kit,APC Super white headlights and fogs and front and rear turn signals,Ventshade-ventvisors,Custom Front Grille,Stromung cat-back,Place Racing CAI
Yeah welcome to the boards, good to see another person from up north like SS said (im from CT)
If your gonna get speakers to replace those ones you got then look for a half decent amp when you get them. Runnin off stock or AM HU just doesn't do any speakers justice. Just lettin ya know ahead. Most cd players should fit as SS said and install should be pretty easy once you figure out how to take the old stereo out.